172878 divided by 90 
Our goal is to divide 172878 by 90.

Advancing to step 1:
90 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 90

Step 2:
90 goes into 17 0 times with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 90

Let's proceed to step 3:
The number 90 fits into 172 1 times, leaving a remainder of 82.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 90 away from 172, we end up with 82.
Include the next digit (8) from the dividend after 82, then repeat: 828 / 90

Let's proceed to step 4:
When dividing 828 by 90, we get 9 with a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
The remainder is 18 after subtracting 810 from 828.
Fetch the next digit (7) from the dividend, attach it to 18 and continue: 187 / 90

Moving on to step 5:
187 divided by 90 is 2 with a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
The remainder is 7 after subtracting 180 from 187.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 90

Step 6:
78 divided by 90 is 0 with a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 1920.0
The remainder is 78 after subtracting 0 from 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 7:
If we divide 780 by 90, we get 8 and a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 1920.8
Subtract 720 from 780 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
90 can be fit into 600 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 1920.86
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 9:
90 goes into 600 6 times with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 1920.866
Deduct 540 from 600 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 1920.866 with a balance of 0.006.